Lewis



2 Sheets-Sheet 1 5643/ @[Hiom I Patents A. DESBAIN.

BRAKE NI'ra TATES i ANTOINE DESBAIN, OF MONTREAL,.OANADA,ASSIGNOR TO WILLIAM JAMES LEWVIS, OF SAME PLAGE.

BRAKE.

SPECIFICATION forming part of Letters Patent 1 \To. 605,539, dated June 14, 1898. Application filed September30, 1 1397. Serial netsatsv. (N model.)

treal and Province of'Quebec, Canada, have invented certain new and useful Improve ments in Brakes; and I do hereby declare that the following is a full, clear, and exact description of the same.

The object of my invention is to provide a brake that may be operated either automatically, by the movement of the vehicle to which it may be attached, or manually, in a more efficacious manner than has been possible heretofore.

The invention may be said, briefly, to consist in arrangingbrake-shoes in close proximity to the wheels and providing an. operative connection between said brake-shoes and one of the axles, whereby the rotation of the Wheels of the car, and with them the axle, may at will cause the said brake-shoes to be suddenly applied to the wheels with greater force than has been possible heretofore, this improved brake-shoe-operating mechanism be ing also connected to a hand-operated device, whereby the brake-shoes may be either fully or partially applied.

For full comprehension, however, of the invention reference must be had to the accompanying drawings, forming a part of this specification, in which like symbols indicate the same parts, and wherein- Figure 1 is a plan view of a car-truck with my invention applied thereto; and Fig. 2, a longitudinal vertical sectional view thereof, taken on line 2 2, Fig. 1.

The truck may be of any improved construction and design, and the same may be said of the brake-shoes proper. The latter (the brakeshoes 5) are pivotally mounted upon the ends of sliding bars 6, carried in brackets 7,

. secured to the longitudinal framebars 8 of the truck, the other ends of these sliding bars being extended in vertical width to provide bearing-sections 9 and having their outer faces 10 (i. a, the faces adjacent to one another) of convex form.

A horizontal shaft 11 is mounted transversely of the truck and in,a line with a point centrally of the space between the adjacent bearing-faces 10 in bearings formed in the longitudial frame-bars Sof the truck. Upon the ends of the portion of this shaft 11 between the longitudinals 8 are rigidly mounteda pair of ovalca'm-disks 12, upon which the said bearing-faces 10 are caused to normally yieldingly bear by means of spiral springs 13, connected at their ends to the sides of the adjacent bearing-section 9. As is evident, various means may be used to turn this shaft 11 and cause the cams 12 to bear upon the bearing-faces 10 and apply the brakes within the spirit of my invention, as I consider the foregoing, independent of the'specific means to be now described, to be one of the main features of my invention.

A hub 14 is rigidly mounted upon the shaft 11 and has a vertically projecting arm 15 formedintegrally therewith. To this arm and about midway of its length is pivotallycOnnected the forked end of a sleeve 16, adapted to receive one end of a rod 17, having a collar 18 rigidly secured upon the end thereof, and a spiral spring 19 inclosing said rod and bearing atone end upon said collar, while its other end bears upon the inner face of the end of a cap 20, preferably to take over said rod and havingthe inside face of its body portion screwthreaded totak e over and be fitted upon the diminished and screw-threaded end 21 of the sleevelG. Theother end of this rod 17 is connected to a toothed rack 22," the other end whereof has a secondrod 23 connected there- I.

tion 24 of a bracket 41 and having a spiral spring 25 encircling same and bearing between the end of said rack and the said portion of the bracket. Clhis spring and the spring 19 act as a buffer, and the spring 25 has the double function of assisting the rack to resume its normal position when released. This rack 22 intermeshes with a pinion 26, mounted loosely upon the axle 27 ,and having a clutchface 28 formed upon the inner side thereof. An adjustable clutch-block 29 'isn ounted loosely upon this axle andconnected thereto by a feather and groove, and a lever, preferably in the form of a cross, has the end of one of its arms 30 forked, as at 31, to straddle said clutch-block and take into a groove 32 therein, the end of another arm 33 being pivotally connected to the end transverse bar 34 of the truck-frame, while the ends of the other arms 35 and 36 are pivotally connectedto the inner ends of the respective rods 37 and 38, each connected to the lower end of a vertical lever 39, pivoted to a bracket 40, carried at each end of the truck, one lever and bracket being shown, however, as both brackets and both levers are identically the same.

In order to maintain the rack in constant contact with the pinion, I secure the beforementioned rigid bracket 41 to the frame of the truck adjacent to the rack and mount therein a roller 42, adapted to bear upon said rack, this roller being preferably grooved, as shown, to accommodate a rod to be hereinafter described.

To apply the brakes when a car is in motion in either direction by the means just described, it will be only necessary to draw upon either of the rods 37 or 38, which will, as shown in chain lines, Fig. 2, cause the clutchblockto engage the clutch-face of the pinion- 26 and put same in motion, thus causing the rack'to either draw or push upon the rod 17 and in either case turn the shaft 11, and with it the cams 12, and apply the brakes, while said buffer-section, before described, yields slightly to any excessive shock when said rod 17 is pulledupon.

As the sudden stoppage of the car is not generally required except in acase of emergency, I consider it essential to provide means whereby the speed of a car may be arrested gradually. To this end I pivotally connect one end of each of a pair of rods 45 and 46 to the upper end of the arm 15 and connect the other end of each of said rods to one end of a chain 47, the other end whereof is connected manner, and said cranks will be located, as

is usual, at opposite ends of the car; but I have considered it necessary to illustrate and describeonly one crank, ratchet, pawl, and chain.

It is evident that, if desired, the pinion 26 may be mounted upon the axle that carries the Wheels upon which the brake-shoes bear; but I prefer to mount it as shown, for the reason that when the brake-shoes are applied the pinion will be held by the rack against rotation, thereby holding the axle upon which it is mounted and the wheels carried by the latter against rotation.

Many changes in the precise construction of the parts may be made without departing from the spirit of my invention.

What I claim is as follows:

1. In combination With a car-truck, a carbrake comprisinga brake-sh0e,mounted upon a shaft mounted transversely of the truck, a cam mounted uponisaid shaft, means for causing the free end of said sliding bar to normally yieldingly bear upon said cam, means actuated by the rotation of said wheel for rotating said shaft, for the purpose set forth.

2. In combination with the truck of a car, a car-brake comprising a brake-shoe mounted upon one end of a suitably-supported sliding bar, and located in close proximity to the periphery of the wheel to which it is to be applied; a shaft mounted transversely of the truck; a cam mounted rigidly upon said shaft, means for causing the free end of said slid- "ing bar to normally bear upon said cam; a hub mounted rigidly upon said shaft; an arm extending laterally from and connected rigidly to said hub; and means for operatively connecting said arm to one of the axles ofthe truck whereby said arm and with it said shaft may be oscillated to either side of the vertical according to'the direction of rotation of the wheels mounted upon said axle, for the purpose set forth.

3. In combination with the truck of a car, a car-brake comprising a brake-shoe mounted upon one end of asuitably-supported sliding bar, and located in close proximity to the periphery of the wheel to which it is to be applied; a shaft mounted transversely of the truck; a cam mounted rigidly upon said shaft, means for causing the free end of said sliding bar to normally bear upon said cam; a hub mounted rigidly upon said shaft; an arm extending laterally from and connected rigidly to said hub; and means comprising a buffer-section for operatively connecting said arm to one of the-axles of the truck whereby said arm and with it said shaft may be oscillated to either side of the vertical according to the direction of rotation of the Wheels mounted upon said axle, for the purpose set forth.

4. In combination with the truck of a car, a car-brake comprising a brake-shoemounted upon one end of a suitably-supported sliding bar, and located in close proximity to the periphery of the wheel to which it. is to be applied; a shaft mounted transversely ofthe truck; a cam mounted rigidly upon said shaft, means for causing the free end of said sliding bar to normally bear upon said cam; a hub mounted rigidly upon said shaft; an arm extending laterally from and connected rigidly to said hub a pinion mounted loosely upon.

one of the axles of the truck and having one of its ends formed with a clutch-face a clutchblockmounted loosely upon but keyed to said axle; a toothed rack adapted to intermesh withsaid pinion and operatively connected to the aforesaid arm; and means for shifting said clutch-block into and out of engagement with the clutch-face of said pinion, for the purpose set forth.

5. In combination with the truck of acar, a car-brake comprising a brake-shoe mounted upon one end of a suitably-supported sliding bar, and located in close proximity to the periphery of the wheel to which it is to be applied; a shaft mounted transversely of the truck; a cam mounted rigidly upon said shaft, means for causingthe free end of said sliding bar to normally bear upon said cam; a hub mounted rigidly upon said shaft; an arm extending laterally from and connected rigidly to said hub; a pinion mounted loosely upon one of the axles of the truck and havingone of its sides formed with a clutch-face a clutch block mounted loosely upon but keyed to said axle; a toothed rack adapted to intermesh with said pinion, and operatively connected to the aforesaid arm; a lever leaving one end forked to straddle and take into a groove in the clutch-block, and the other end fulcru med to the truck-frame, a cross-bar secured upon and transversely of said lever, the end of said cross-arm being connected to the lower end of a Vertical lever mounted upon the end of the truck, substantially as described and for the purpose set forth.

6. In combination with the truck of a car, acar-brake comprisinga brake-shoe mounted upon one end of a suitably-supported sliding bar, and located in close proximity to the periphery of the wheel to which it is to be applied; a shaft mounted transversely of the truck; a cam mounted rigidly upon said shaft, means for causing the free end of said sliding bar to normally bear upon said cam; a hub mounted rigidly upon said shaft; an arm extending laterally from and connected rigidly to said hub; and means including a buffer-section, for operatively connecting said arm to one of the axles of the truck whereby said arm and with it said shaft may be oscillated to either side of the vertical according to the direction of rotation of the wheels mounted upon said axle, for the purpose set forth.

7. In combination with the truck of a car, a car-brake comprising a brake-shoe mounted upon one end of a suitably-supported sliding bar, and located in close proximity to the pe riphery of the wheel to which it is to be applied; a shaft mounted transversely of the truck; a cam mounted rigidly upon said shaft, means for causing the free end of said sliding bar to normally bear upon said cam; a hub mounted rigidly upon said shaft; an arm extending laterally from and connected rigidly to said hub; a pinion mounted loosely upon one of the axles of the truck and having one of its sides formed with a clutch-face a clutch block mounted loosely upon but keyed to said axle; a toothed rack adapted to intermesh with said pinion and connected to a buffer-section which is connected to the aforesaid arm; and means for shifting said clutch-block into and out of engagement with the clutch-face of said pinion, for the purpose set forth.

8. In combination with the truck of a car, a car-brake comprising a brake-shoe mounted upon one end of a suitably-supported sliding bar, and located in close proximity to thepeplied; a shaft mounted transverselyof the truck; a cam mounted rigidly upon said shaft,

means for causing the free end of said sliding bar to normally bear upon said cam; ahub mounted rigidly upon said shaft; an arm extending laterally from and connected rigidly to said hub; a pinion mounted loosely upon one of the axles of the truck and having one of its sides formed with a clutch-face; a clutchblock mounted loosely upon but keyed to said axle; a toothed rack adapted to intermesh with said pinion and connectedto a buffersection which is connected to the aforesaid arm; a lever leaving one end forked to straddie and take into a groove in the clutch-block and the other end fulcruined to the truckframe, a crossbar secured upon and transversely of said lever, the end of said cr0ssarm being connected to the lower end of a plied; a shaft mounted transversely of the truck; a cam mounted rigidly upon said shaft, means for causing the free end of said sliding bar to normally bear upon said cam; a hub mounted rigidly upon said shaft; an arm extending laterally from and connected rigidly to saidhub; a pinion mounted loosely, upon one of the axles of the truck and having one of its sides formed with a clutch-face; a clutchblock mounted loosely upon but keyed to said axle; a toothed rack adapted to intermesh with said pinion and connected to a buffersection consisting of a sleeve having one end permanently closed and pivotally connected to the aforesaid arm, a rod connected rigidly at one end to said rack and having its other end located within said sleeve and provided with a head, a cap adapted to take over said rod and close the open end of said sleeve, and a spiral spring encircling the portion of said rod withinsaid sleeve and bearing between said cap and the head of said rod; and means for shifting said clutch-block into and out of engagement with the clutch face of said pinion, for the purpose set forth.

10. In combination with the truck of a car, a car-brake comprising a brake-shoe mounted upon one end of a suitably-supported sliding bar, and located in close proximity to the periphery of the wheel to which it is to be applied; a shaft mounted transversely of the truck; a cam mounted rigidlyupon said shaft, means for causing the free end of said sliding bar to normally bear upon said cam; a hub mounted rigidly upon said shaft; an arm extending laterally from and connected rigidly to said hub; a pinion mounted loosely upon one of the axles of the truck and having one of its ends formed witha clutch-face aclutchblock mounted loosely upon but keyed to said axle; a toothed rack adapted to inter-mesh with said pinion and connected to a buffersection consisting of a sleeve having one end permanently closed and pivotally connected to the aforesaid arm, a rod connected rigidly at one end to said rack and having its other end located within said sleeve and provided with a head, a cap adapted to take over said rod and close the open end of said sleeve, and a spiral spring encircling the portion of said rod Within said sleeve and bearing between said cap and the head of said rod a lever having one end forked to straddle and take into a groove in the clutch-block and the other end fulcrumed to the truck-frame, a cross-bar secured upon and transversely of said lever, the end of said cross-arm being connected to the lower end of a vertical lever mounted upon the end of the truck, for the purpose set forth.

11. The combination of a car-truck comprising a truck-frame, a series of axles mounted transversely of said frame, and a pair of wheels mounted rigidly upon each of said axles; a shaft mounted transversely of said truck-frame and centrally thereof; a pair of cam-disks mounted rigidly upon said shaft and'in line with said wheels; two pairs of sliding bars mounted in brackets carried upon said truck-frame one pair being located at each side of the frame; abrake-shoe mounted upon one end of each of said bars and located in close proximity to the periphery of one of the wheels the other end of each of said bars being located in contact with one side of one of the cams means for maintaining said bars in constant yielding contact With said cams; a hub mounted rigidly upon said shaft an arm extending laterally from and connected rigidly to said hub; a pinion mounted sleeve having one end permanently closed and pivotally connected to the aforesaid arm, a rod connected rigidly at one end to said rack and having its other end located within said sleeve and provided with a head, a cap adapted to take over said rod and close the open end of said sleeve, and a spiral spring encircling the portion of said rod within said sleeve and bearing between said cap and the head of said rod; a lever having one end forked to straddle and take into a groove in the clutchblock and the other end fulcrumed tothe truck-frame, a cross-bar secured upon and transversely of said lever,the end of said crossarm being connected to the lower end of a vertical lever mounted upon the end of the truck, substantially as described, and for the purpose set forth. 1

12. The combination of the truck 8; brakeshoes 5, sliding bars 6, bearing-sections 9, with bearing-faces 10; shaft 11; cam-disks 12; springs 13; hub 14; arm 15; sleeve 16; rod 17; collar 18; spring 19; cap 20; rack 22; rod 23; bracket 41; spring 25; pinion 26; clutch-face 28; axle 27; clutch-block 29; lever 30, 33, 35, 36; rods 37, 38; lever 39; bracket 40; roller 42; rods 45, 46; chain 47; crank-spindle 48; ratchet 49 and pawl 50, all arranged substantially as described and for the purpose set forth.

ANTOINE DESBAIN.

WVitnesses:

OWEN N. EvANs, FRED. J. SEARS. 

